Sels and enochsen



May 22, 1928.

I w. WILD ET AL WATER HEATER Filed May 6, 1

Patented May 22, 1928.

UNITED, STATES 1,671,001 ATENT OFFICE.

WILL AM WILD, HENRY rerun WESSEL'S, AND ERIQING BERNHARD ENOCHSEN, or

'JOHANNESBURG, TRANSVAAL, sourn AFRICA; SAID WILD ASSIGNOR T0 SAID WES- SELS AND ENOCHSEN.

WATER HEATER.

Application filed May 6, 1826, Serial No. 107,229, and in the Unionof South Africa February 18, 1926.

This invention has reference to devices or means of the kind which are positioned in the flues or chimneys of domestic and similar stoves, ranges, et cetera, for heating water, which devices utilize waste heat, i. e. heat that would otherwise. pass up the flue or chimney into the atmosphere. Water-heating means according to the invention can, however, be placed-in the flues or chimneys of other stoves, furnaces, fireplaces, et cetera.

The principal object of theinvention is to construct an efficient water-heating means or device, providinga comparatively large heating surface, which can be conveniently arranged. and readily flxed in the ordinary metal stove-pipe which serves as the flue or chimney or portion thereof.

In our improved water-heating arrangement the water is. heated rapidly owing to the effective circulation therethrough of the water in contact witha large heat-conducting surface with which the products of combustion are-brought into intimate and direct contact in their passage from the firebox through the flue or chimney to the atmosphere. v

A further object of the invention is to simplify and improve water-heating devices of the nature referred to so that the parts will be less expensive-to construct, more easily assembled and, when requisite, more easily taken asunder for inspection, cleaning, repair, or any other purpose.

The water-heating means or device is of compact and skeleton construction, ,and when arranged in the flue or chimney does not undulyobstruct the draught. or materially reduce the efliciency of the stove, et cetera.

Our invention will be fully described with the aid of the accompanying drawings, wherein Fig. 1 is a front elevation of a common form of domestic stove or range with the water-heating means or arrangement positioned in the bottom section of the stovepipe which serves as or constitutes, or communicates witl 'the flue .a portion of the stove-pipe being broken away to expose part of the water-heating arrangement.

Fig. 2 is a sectional side elevation of the stove-pipe with the means or device, partly in section, arranged therein.

Fig. 3 is a sectional plan of the bottom portion of the water-heating arrangement,

the section being taken on the line 33 of Fig. 2, and

Fig. 4 isza sectional elevation of Fig. 3 on line As illustrated the water-'heatingmeans or arrangement includes upper and lower, or

top and bottom, hollow members 1, 2, re-

spectively, which are of identical construction and may be cast or otherwise suitably constructed. These members 1, 2, are shown of oval or elliptical shape with avertical opening or passage 3 through thecentre.

Alternatively, the hollow members 1, 2,

could be made of annular form. The oval spaces or chambers 4, 5, of the the hollow members 1, 2, respectively are placed in communication by means of a plurality eight are shownof vertical pipes or tubes 6, which may be of any desired length to afford the requisite aggregate area of heating surface. The tubes 6 are fixed in and between the members 1, 2, by meansof hollow oval-shaped plates or covers 7, 8, which have openings formed through them which coincide with the openings or passages 3 through the members 1, 2. The plates or covers 7 8, are fixed in position by means of screws '9see Figs. 3 and 4:sa id screws 9 at their inner ends engaging in screwscrew into the holes and check nuts 12 are provided at the lower ends of the pipes 6 for retaining them in position and assisting in making the water-tight joints between them and the cover 8. This method of'fixing the pipes 6 allows of the pipes with the attached plates 7, 8, being easily and quickly removed, after taking out the screws 9, for inspection, cleaning and other purposes. The lower ends of the pipes 6 are screw-threaded for a suflicient length to allow of their being screwed down into the cover to a sullicient depth to admit of their being thereafter screwed up into the holes in the cover 7.

It will be seen from the drawings that the members 1, 2, are made Wider at the point where the branch is positioned which, in the case of the one member 1, forms the outlet 13, and, in the case of the other member 2, forms the inlet 14 for the water. This inclines the top and bottom of members 1, 2, respectively when they are fixed in position. The inclination is in an upward direction from the inlet 14, and in an upward direction towards the outlet 18. This ensures that the flow of water through the arrangement is in an upward direction from the inlet 14 to and through the tubes 6, and upwardly from the tubes 6 to the outlet 13. This also tends to ensure a more or less uniform flow of water through all of the tubes 6. e

In Fig. 1 15 represents the stove and 16 l the lowermost section of the stove-pipe or flue. This section 16 is shown taperedfrom the bottom and of oval shape in cross sec tion. At the bottom the section 16 is constructed with a socket or part 17se'e Fig.

2-which fits the ordinary oval flange 18- provided on the stove 15, and at the top it is fitted into the next cylindrical section 19 of the 'fiue.

, The water-heating arrangement is posi-- tioned in the section 16, the latter beingshown provided at the back with holes.

through which the reduced screw-threaded extensions of the inlet 14 and outlet 13 project. 20, 21, are nuts screwed on to the threaded extensions at the outside of the section 16, which nuts 20, 21, fix the arrangement in position. 22 is the pipe which conveys the water from its'sourceof supply to the inlet branch 14 and 23-is the pipe which conveys theheated water from the arrangementand may deliver it into a tank, reservoir, cistern, et cetera.

The section 16 at the front is provided 6, it will be evident that such plates or covers 7, 8, together with the tubes 6 when removed, allow ofth'e tubes 6 and the interiors of the plates or covers 7, 8, being easily cleaned. The spaces 4, 5, of the members 1, 2, respectively, can. also be readily cleaned in situ after the, covers 7, 8, have been removed.

Instead of fixing the pipes 6 into the plates or covers 7, 8, in the manner above described, the ends of "thepipes 6 could be cast, brazed or otherwise fixed in position in said plates 7, 8, or the pipes 6 could be cast integral: with said plates.

In the operation of the arrangement the water enters throughpipe 22 into the'space or chamber 5 in the bottom member 2. Thence it passes through the pipes 6 into the chamber4 in the top member 1 and out throughthe outlet 13 and pipe 23. The products of combustion and hot gases from the fire-box of the stove 15 pass up through the opening 3 in the member 1, up fa-nd around the pipes 6, and through the passage 3 in the top member 1, and also between said members 1, 2, and the wall of the stove-pipe section 16. The heat is conducted through the various parts of the arrangement to the water in its passage from the inlet to the outlet.

What we claim as our invention and desire to protect by Letters Patent is A water-heating means adapted to be placed in a flue, including upper and lower annular members each having an annular space through which passes the water to be heated, an annular cover plate fixedtoeach member and closing the space therein, anda plurality of'tubes disposed intermediate and connecting the cover plates and. placing the spaces in the annular members in communioation, the lower member being constructed with an inlet for the water to be heated and the upper member with an outlet for the heated water, the lower annular member being constructed with its bottom portion upwardly inclined in a direction away from the inlet so that the annular space within it gradually becomes shallower in a direction away, from the inlet, and the upper annular member being constructed with its upper portion upwardly inclined in a, direction towards the outlet so that the space within it gets gradually deeper in the directionof the outlet, as set forth. 6

In testimony whereof we have signed our names to this specification;

WVILLIAM WILD. i HENRY PETER WESSELS. ERLING BERNHARD ENOCHSEN) 

